Picklemumma, yes it sounds like we are in a similar situation, apart from the fact my ds doesn't take any other milk and I worry a lot about leaving him (just last night I had a dream that I successfully managed to leave him with my mum in order to go on my business trip....except I can't really do that as she's in Italy but never mind).
I had almost managed to night wean before the holidays and the thing that really struck me is that once we cut down the number of night feeds, he suddenly stopped wanting to bf so much during the day too, without me trying in any way. This seems different from picklemumma's experience I guess.
I had not made a particular effort, because the nights were the priority - but I must say that frequent daytime feeds can be a real problem because while I don't mind taking a break at home and relaxing on the sofa....it does stop me going places with him. (I stopped bf in public about 2-3 months ago because it was an impossible task. I don't care too much what people think, although he looks older than his age and I've definitely noticed some curious looks, but my real worry is the way he comes on and off leaving me exposed, and pulls my T-shirt up and down, etc.
Since the holidays I resumed night feeds to avoid him screaming his head off in the hotel room, and day feeds to avoid major tantrums - yes I deliberately call them so because I have to come to the conclusion that sometimes - not always of course - that's what they are...even if there's milk involved...because he sounds and behaves exactly the same way he does when I deny him something else, like buying him a toy truck every time he sees one in a shop, etc).
So I haven't read the LLL book but I must say I that in the case of my ds I would not deny him a feed if he hurt himself, or is clearly teething. BUT sometimes I get the impression he feeds frequently just because....he can. And I do think at this point in his life I need to start teaching him that he can't always have instant gratification in life, not even with breastfeeding.
Now he is back to feeding frequently during the day and twice at night plus as soon as he wakes up which can be quite early. I am exhausted again, and as I've said I need to prepare for this trip. So I'll be cutting down feeds over the coming weeks, and in my case it seems that saying no during the day is also part of the equation, so he can learn to understand that there are limits.
I think this is probably very different from the LLL philosophy and I hope this doesn't upset anyone. BUt having read the "Womanly Art of Breasfteeding" I have to say I didn't find it very helpful on the "feeding too much issue" because it just seemed to suggest I am not doing enough things to keep him busy and happy, and that I should try not to sit down as much. I think I am doing lots of things actually (despite my fear of going places as he may go on major tantrums if I don't feed him precisely when and where he wants.....), but still he wants more. And I can't NOT sit on the sofa as I am exhausted most of the time!
So - sorry for rambling on but I think that although it's clear the milk is a need and not a want, there are times when I think the boundary is confused and it's really important for me to say no.